>
> *That sounds like some very handy code. Is it in open source space
> anywhere? *
>
No.
On Tue, Jan 26, 2016 at 9:24 AM, Dean wrote:
> I found a great source of information on SPI ...
>
> https://www.kernel.org/doc/Documentation/spi/
>
>
>
> --
> For more options, visit http://beagleboard.or
I found a great source of information on SPI ...
https://www.kernel.org/doc/Documentation/spi/
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop
4.1.12-ti-r29 UTC 2015 armv7l GNU/Linux Debian Image 2015-11-12
Dean,
By the way, I think it's great that you seem to be using a virtual
machine for test development. This is something I do myself too.
In fact I wrote a smallish web server like app in C to display CANBUS
data out over a we
He is also using an accompanying 74HC595 8 bit serial shift register in a 4
bit (interface DB4-DB7 configuration).
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from t
Newhaven Model: NHD-0216K1Z-NSB-FBW-L.
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+u
On Mon, Jan 25, 2016 at 10:09 PM, Dean wrote:
> Interesting. Just reloaded with an updated kernel and this time it did not
> crash. All the same similar problems remain. William all things equal if you
> found the book remedial I would like to challenge you on that. Buy yourself
> an LCD and see i
I'm a programmer, and not an electronics engineer. However, I've already
done bare metal LCD with an MSP430, so I doubt the BBB would present much
of a challenge . . .
On Mon, Jan 25, 2016 at 9:09 PM, Dean wrote:
> Interesting. Just reloaded with an updated kernel and this time it did not
> cras
Interesting. Just reloaded with an updated kernel and this time it did not
crash. All the same similar problems remain. William all things equal if
you found the book remedial I would like to challenge you on that. Buy
yourself an LCD and see if you can replicate what Derek Molloy did there in
Dean,
By the way, I think it's great that you seem to be using a virtual machine
for test development. This is something I do myself too.
In fact I wrote a smallish web server like app in C to display CANBUS data
out over a websocket. Initially this code was developed on an i386 virtual
machine,
>
> *The code came from Derek Molloy's Exploring Beaglebone -Tools and
> Techniques Chapter 9 page 362 Listing 9-10. *
>
Yeah, I own the book too, but to be honest, I've only read a couple pages.
Mostly because most of the material is remedial for me. I've been
programming since the early 90's, an
Thanks Robert. I will give it another whirl.
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beaglebo
The code came from Derek Molloy's Exploring Beaglebone -Tools and
Techniques Chapter 9 page 362 Listing 9-10. Regarding a decent book on how
to spidev have you any recommendations? I am the first to admit I am a
novice and it goes without saying that we all started somewhere as
frustrating as t
On Mon, Jan 25, 2016 at 6:57 PM, Dean wrote:
> apt-get install build-essential
>
>
> In 3.8.x spidev2.0 could be used on spi1, but with 4.1.x+ the "first"
> is spidev1 (even if spi1 over spi0..) >
>
>
> SPIDevice *busDevice = new SPIDevice(2,0); //Using second SPI bus (both
> loaded)
>
> The code
Ok, so without seeing any code no one can really answer a question related
to your problem. However, I will say that errors in the realm of "invalid
argument" or "file not found" are development 101 type problems. Also, if
your code is not exiting with an error on these problems I will say that
you
*pt-get install build-essential *
*In 3.8.x spidev2.0 could be used on spi1, but with 4.1.x+ the "first" is
spidev1 (even if spi1 over spi0..) > *
* SPIDevice *busDevice = new SPIDevice(2,0); //Using second SPI bus (both
loaded)*
*The code is trying to open /dev/spidev2.0, but it's not
*apt-get install build-essential *
*In 3.8.x spidev2.0 could be used on spi1, but with 4.1.x+ the "first" is
spidev1 (even if spi1 over spi0..) > *
* SPIDevice *busDevice = new SPIDevice(2,0); //Using second SPI bus (both
loaded)*
*The code is trying to open /dev/spidev2.0, but it's no
On Sun, Jan 24, 2016 at 6:09 PM, William Hermans wrote:
>>
> The onboard (pcie) RTL8168g/8111g has a nasty lockup bug. So you have to use
> a 10/100 or force 100Mb mode, as it randomly locks up 1 Gb with heavy cpu
> load (build farm)..
>
>
> Silicon bug ?
Might be a mis-configuration of the RTL81
>
>
> *The onboard (pcie) RTL8168g/8111g has a nasty lockup bug. So you have to
use a 10/100 or force 100Mb mode, as it randomly locks up 1 Gb with heavy
cpu load (build farm)..*
Silicon bug ?
*What a waste of the pcie channels for 100Mb mode. ;)*
>
Well, at least there wouldn't be any hardware
On Sun, Jan 24, 2016 at 6:03 PM, Dean wrote:
>
> Natively I am running 4.9.2 ...
>
> cat /proc/version
> Linux version 4.1.12-ti-r29 (root@a5-imx6q-wandboard-2gb) (gcc version 4.9.2
> (Debian 4.9.2-10) ) #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015
>
>
> That said I also have a VM of Debian 8.2 whic
On Sun, Jan 24, 2016 at 6:00 PM, William Hermans wrote:
> O jetsons . . . will have to query you on that sometime. Those boards
> seem pretty nice, aside from not having lots of external peripheral I/O. IN
> the context of embedded . . .
>
and they were 'half' price about two months ago (96)
Dean,
This should be your first worry-> open("/dev/spidev2.0", O_RDWR) = -1
ENOENT (No such file or directory)
Find out why your system thinks this file does not exist. As in perhaps it
doesn't because you need to load a device tree file as mike mentioned
above. But also as stated above, there ca
Natively I am running 4.9.2 ...
cat /proc/version
Linux version 4.1.12-ti-r29 (root@a5-imx6q-wandboard-2gb) (gcc version
4.9.2 (Debian 4.9.2-10) ) #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015
That said I also have a VM of Debian 8.2 which I have used on occasion for
cross compilation and Eclips
O jetsons . . . will have to query you on that sometime. Those boards
seem pretty nice, aside from not having lots of external peripheral I/O. IN
the context of embedded . . .
On Sun, Jan 24, 2016 at 4:57 PM, Robert Nelson
wrote:
>
>
> On Sun, Jan 24, 2016 at 5:54 PM, William Hermans
> wrot
Anyway, Debian Wheezy would be gcc 4.7.2 I believe( don't recall the minor
version ), not sure abotu Ubuntu, but 4.9.x does not seem unreasonable.
On Sun, Jan 24, 2016 at 4:54 PM, William Hermans wrote:
> wait a minute . . .
>
> What was posted was running on my *BBB.* That said I also have a VM
On Sun, Jan 24, 2016 at 5:54 PM, William Hermans wrote:
> wait a minute . . .
>
> What was posted was running on my *BBB.* That said I also have a VM of
> Debian 8.2 which I did some cross compiling. At any rate my GCC is 4.9.2
>
> cat /proc/version
>
>> Linux version 4.1.12-ti-r29 (root@a5-*imx6
wait a minute . . .
What was posted was running on my *BBB.* That said I also have a VM of
Debian 8.2 which I did some cross compiling. At any rate my GCC is 4.9.2
cat /proc/version
> Linux version 4.1.12-ti-r29 (root@a5-*imx6q-wandboard-2gb*) (gcc version
> 4.9.2 (Debian 4.9.2-10) ) #1 SMP PREE
What was posted was running on my BBB. That said I also have a VM of Debian
8.2 which I did some cross compiling. At any rate my GCC is 4.9.2
cat /proc/version
Linux version 4.1.12-ti-r29 (root@a5-imx6q-wandboard-2gb) (gcc version
4.9.2 (Debian 4.9.2-10) ) #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC
>
> *Dean,*
>
> * Looks like you found where to put libEBBLibrary.so...*
>
> * open("/lib/arm-linux-gnueabihf/libEBBLibrary.so", O_RDONLY|O_CLOEXEC) =
> 3*
>
> * Apparently the LCD is attached via SPI? The code is trying to open
> /dev/spidev2.0, but it's not there.*
>
> * open("/dev/spidev2.0", O
On 01/24/2016 06:04 PM, Dean wrote:
I am trying to decipher my strace. My setup is Linux beaglebone
4.1.12-ti-r29 #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015 armv7l
GNU/Linux BeagleBoard.org Debian Image 2015-11-12. I am not sure on
how to interpet my findings. In particular of the files that
On Sun, Jan 24, 2016 at 5:42 PM, William Hermans wrote:
> Anyway, here is the short "skinny":
>
> /etc/ld.so.nohwcap
>
> /etc/ld.so.preload
> These two files are not found. Quite honestly I have no idea how important
> these files are. Probably not very important, so let's not worry about them
> j
4.9.2
cat /proc/version
Linux version 4.1.12-ti-r29 (root@a5-imx6q-wandboard-2gb) (gcc version
4.9.2 (Debian 4.9.2-10) ) #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google
Anyway, here is the short "skinny":
/etc/ld.so.nohwcap
/etc/ld.so.preload
These two files are not found. Quite honestly I have no idea how important
these files are. Probably not very important, so let's not worry about them
just yet.
Your library you were worried about in your other post succes
Thanks for getting back to me. I am running gcc version 4.9.2
crico@crico-X555LAB:~$ cat /proc/version
Linux version 3.19.0-47-generic (buildd@lgw01-56) (gcc version 4.9.2
(Ubuntu 4.9.2-10ubuntu13) ) #53-Ubuntu SMP Mon Jan 18 14:02:48 UTC 2016
--
For more options, visit http://beagleboard.org
Which version of gcc are you running, and is this native, or cross compile ?
On Sun, Jan 24, 2016 at 4:25 PM, William Hermans wrote:
> From this man page: http://man7.org/linux/man-pages/man8/ld.so.8.html
>
> FILES
>
>*/lib/ld.so*
> a.out dynamic linker/loader
>*/li
>From this man page: http://man7.org/linux/man-pages/man8/ld.so.8.html
FILES
*/lib/ld.so*
a.out dynamic linker/loader
*/lib/ld-linux.so.*{*1*,*2*}
ELF dynamic linker/loader
*/etc/ld.so.cache*
File containing a compiled list of directo
I am trying to decipher my strace. My setup is Linux beaglebone
4.1.12-ti-r29 #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015 armv7l GNU/Linux
BeagleBoard.org Debian Image 2015-11-12. I am not sure on how to interpet
my findings. In particular of the files that are missing is that because I
need
36 matches
Mail list logo